Controller for an automatic motor vehicle transmission

Details Controller for an automatic motor vehicle transmission Controller for an automatic motor vehicle transmission

1996-07-19

1998-01-27

Luong, Vinh T.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477 78, 3644241, B60K 4106

Patent

active

057117128

ABSTRACT:
A controller for an automatic motor vehicle transmission automatically sets a transmission ratio of a continuous transmission through the use of stored data as a function of a gas pedal position and a vehicle speed. Through the use of a fuzzy logic control circuit, the engine speed is automatically set by continuous regulation of the transmission ratio, specifically to the range of optimum efficiency, minimum exhaust gas emission or maximum power. The load condition of the motor vehicle, the driving style of the driver and, as the case may be, the type of the road are taken into account in this process. A correction circuit carries out dynamic corrections of the transmission ratio. The data can be stored, for example, in control characteristic maps, or can be generated by another analogous fuzzy logic control circuit.

REFERENCES:
patent: 4841815 (1989-06-01), Takahashi
patent: 5099428 (1992-03-01), Takahashi
patent: 5267158 (1993-11-01), Sakaguchi et al.
patent: 5289740 (1994-03-01), Milunas et al.
patent: 5323318 (1994-06-01), Hasegawa et al.
patent: 5337630 (1994-08-01), Sakai et al.
patent: 5389050 (1995-02-01), Sakai et al.
JP-A-61027345 (Nissan) Feb. 6, 1986. JP-A-5155223 (Nissan) Jun. 22, 1993.

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